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Stanley SM 50

Stanley SM50 Hydraulic Water Pump

The Stanley SM50 Hydraulic Water Pump is a rugged, high-capacity submersible centrifugal pump engineered for fast, reliable water removal in demanding utility, construction, and industrial environments. Designed for efficiency and durability, the SM50 delivers exceptional performance while remaining compact, lightweight, and easy to maintain.

Capable of handling clear water and liquids containing up to 10% solids, the SM50 is built to perform in challenging jobsite conditions where downtime is not an option.

Key Features & Benefits

No Priming Required

The centrifugal pump design eliminates the need for priming, allowing for immediate operation and faster deployment in the field.

Corrosion-Resistant Impeller

A semi-closed impeller constructed from cast stainless steel resists corrosion and abrasion, ensuring long service life even in harsh environments.

Quick & Easy Maintenance

The pump chamber can be accessed by removing just two cap screws, making cleaning and routine maintenance fast and simple.

Dry-Run Capable Seal System

A robust seal design allows the pump to run dry without sudden seal failure, reducing the risk of damage during unpredictable operating conditions.

High-Efficiency Submersible Design

Draws water down to just 3.5 inches, leaving minimal residual water behind.

High-Volume Output

Delivers up to 500 GPM (1890 LPM), making it ideal for heavy-duty dewatering and water transfer applications.

Compact & Portable

Weighing only 21 lbs. (9.5 kg), the SM50 is easy to transport, position, and deploy on the jobsite.

Performance Specifications

Output Capacity

500 GPM (1890 LPM)

Hydraulic Requirements

Pressure Range: 1000–2000 PSI (69–138 Bar)

Flow Range: 7–12 GPM (26–45 LPM)

Material Handling Capability

Handles solids up to 3/8 inch in diameter

Dimensions

Length: 10.5 in. (26.7 cm)

Width: 10 in. (25.4 cm)

Hose & Connection Details

3-inch NPT outlet with Camlock groove fitting

3/8-inch flat-faced HTMA quick couplers

Weight

21 lbs. (9.5 kg)

Ideal Applications

Utility & Construction Dewatering

Perfect for trenches, sumps, vaults, and excavations requiring fast water removal.

Industrial Water Transfer

Efficiently moves water in high-demand industrial environments.

Emergency & Flood Response

Reliable performance for flood control, disaster recovery, and emergency water removal operations.

Why Choose the Stanley SM50?

The Stanley SM50 Hydraulic Water Pump combines high output, durability, and user-friendly maintenance into a compact, job-ready package. Its ability to handle solids, resist corrosion, and operate reliably in harsh conditions makes it a trusted solution for professionals who demand performance and dependability.